A vane design method based on Orson vortex and its designed vane pump
A vane pump and vane technology, which is applied to the components, pumps, and pump components of the pumping device for elastic fluids, can solve the problems of difficulty in promotion and resource consumption, and achieve the goal of improving the lift and efficiency and reducing the impact loss. Effect
Active Publication Date: 2021-02-12
TSINGHUA UNIV
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Problems solved by technology
On the one hand, when using optimization algorithms to improve the performance of multi-stage vane pumps, a large number of calculation examples are generally required as samples, which consumes a lot of resources; on the other hand, the results obtained by using optimization algorithms are difficult to explain theoretically, and often difficult promote
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[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0040] Such as figure 1 As shown, according to the multistage vane pump of the embodiment of the present invention, the multistage vane pump includes a first stage impeller 11, a first stage guide vane 12, a second stage impeller 21, a second stage guide vane 22, a third stage impeller 31. Wherein, the impeller includes a hub side 23 , a blade 24 and a rim side 25 , and the blade includes a first end 26 , a profile line 27 and a second end 28 .
[0041] According to the multistage vane pump of the embodiment of the present inve...
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The invention discloses a vane design method based on an Orson vortex and a vane pump designed therefor. Each stage of the vane pump is composed of an impeller and a guide vane matched therewith. The vane of the vane pump impeller includes: inlet angle, profile and the outlet angle, wherein the blade has a first end and a second end in the extension direction, the first end is connected to the inlet angle, and the second end is connected to the outlet angle; the inlet angle of the blade is determined by the design method based on the Orson vortex; the blade The shape line and exit angle are determined by the iterative method of positive and negative problems. The Orson vortex-based blade design method uses the Orson vortex model to determine the downstream flow field of the upper guide vane, and determines the blade inlet angle in the downstream flow field of the upper guide vane through the velocity triangle at the blade inlet. According to the vane pump of the embodiment of the present invention, the impact loss at the inlet of the impeller can be effectively reduced, and the lift and efficiency of the multistage vane pump can be improved.
Description
technical field [0001] The invention relates to the technical field of vane pumps, in particular to a vane design method based on an Orson vortex and a vane pump designed therefor. Background technique [0002] In recent years, fluid machinery is constantly developing in the direction of high water head and high efficiency. Using multiple vane pumps in series to form a multi-stage structure is an effective means to effectively increase the total head of the pump system. At present, in the multi-stage vane pump system, it is the most common way to use exactly the same vane pump for each stage. The results of experimental observation and numerical simulation show that when the exact same blades are used at each stage, due to the different inflow conditions at the inlet of each stage blade, obvious flow separation will occur in the flow channel of the subsequent stage, which will seriously affect the performance of the multistage system. Operating efficiency and safety and st...
Claims
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IPC IPC(8): F04D29/24F04D29/22F04D1/06
CPCF04D1/06F04D29/225F04D29/242
Inventor 谭磊刘明
Owner TSINGHUA UNIV